Velocity-regulator for fluids in motion.



No. 757.039. PATEN'IED APR. 12, 1904. J. B. I'. HERR'ESHOIP.

VELOCITY REGULATOR POB. FLUIDS IN MOTION.

APPLICATION FILED JN. 13. 1902.

2 SHEETS-SHEET 1.

N0 MODEL.

INVENTOR new.y

BYH'M Tldnwyl I ATTORNEYS PATLNTBD APN.12, 1.904.

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' J. B. P. HENRLSHOTT.

-VLLOOITT REGULATOR PON FLUIDS IN MOTION.

APPLIOAT'ION HLBp JAN. '13, 1902.

No MODEL.

2 SHEETS-SHEET 2.

; ATTORNEYS NW W 1n: Nonms Eriks cn. morn-mwa.. wAsmNmoN. u. c.

UNITED STATES Patented April 12, 1904.

PATENT OFFICE.

VELOCITY-REGULATOR FOR FLUIDS IN MOTION..

SPECIFIGATIONformng part of Letters `Patent No. 757,039, dated April 12,1904.

Application filed January 13, 1902. Serial No. 89,424. (No model.)

T all whom, t may con/cern.-

Be it known that I, JOHN BROWN FRANCIS HERREsHoFF, a citizen of theUnited States, f

and a resident of the borough of Brooklyn, county of Kings, and State ofNew York, have invented certain new and useful Improvements inVelocity-Regulators for Fluids in Motion, of which the following is aspecification.

My invention relates to mechanism for governing the supply of fluid,such as water, to a place of consumption, with the object of alwaysfeeding the same amount of the substance per unit of time. For instance,in pumping water for boilers from a river or other body of water thelevel of which is subject to variations an ordinary pump will supplyless water when the level of the water sinks for the reason that thewater is to be lifted to a greater height, and therefore the load on thepump is greater and its speed will fall below its normal speed.

It is the object of my invention to provide a Y simple device in whichthe velocity of the fiowpointed out in the appended claims.

To better illustrate my invention, I have hereunto appended two sheetsof drawings, in which- Figure 1 is a cross sectional elevation on line ll of Fig. 2, showing one form of a regulator constructed according to myinvention. Fig. 2 is a longitudinal section thereof on line 2 2 of Fig.l. Fig. 3 is an elevation of another form of my invention, and Fig. 4:is an elevationv showing how the apparatus 4illustrated by Figs. l and 2may be connected with a pump operated by a steam-engine.

I desire it to be distinctly understood that these two constructions areonly given as eX- amples and that my invention is not limited to thedetails shown herein. a

As shown in Figs. 1 and 2, A is the pipe through which the Huid-forinstance,wateris conveyed, said pipe being, for instance, connected withthe delivery-port of a pistonpump. At a suitable point of said pipeisprovided a laterally-disposed casing B, which, as

shown, receives at its top a shaft C, extending' through stufhng-boxesD. To this shaft is secured a pendent arm E, the `lower end of which iswidened to form a plate F,which constitutes the movable resistancedevice hereinbefore mentioned. It vwill be seen that this resistancedevice is in the path of the water flowing through the pipe A and thatthe water will have a tendency to swing this resistance device about theshaft C as a pivot in the direction of the flow of the water. It willfurther be obvious that the greater the velocity of the water is thefarther the resistance device will be swung out of its normal position.While the mere Weight ofthe arm E and plate F is sufhcient in some casesto accomplish theV desired result, Iprefer to weight the arm E,arranging'the weight in such a manner that instead of having a verticalposition when the liquid is not flowing through the pipe A the said armwill move to an extreme position toward that side from which the wateror other-me-` dium arrives. For this purposeI secure upon the shaft C,and preferably externally of the casing B, an arm G at an angle to thearm E and carrying a weight H; rThis arm Gr eX- tends toward the otherend of the pipe A, so that the weight VI-I will act to throw the arm Fin a direction contraryl to the fiow of the water. Therefore as long asno water flows through the pipe A the plate F would take the positionindicated in dotted lines in Fig. 2,

and when water passes through the pipe Ait will, according to itsgreater or smaller velocity, swing the plate F more or less to the left.The weight H is preferably adjustable lengthwise of the arm G, so thatthe amount of resistance opposed by the plate F may be regulated. Theshaft C is Aoperatively connected in any suitable lmanner with amechanism which governs the velocity of the iiuid passing through thepipe A. This may be done IOO indirectly by a connection from the shaft Cto the steam-valve of the pump, which forces water into the pipe A whena steam-pump is employed for this purpose. If an electric pump is used,the shaft C will have an operative connection to a switch or controller,which regulates the speed of the pump-motor in any approved manner. InFigs. l and 4 I have shown a crank-arm C on the shaft C, from whichcrank-arm a link I leads to an arm J on the steam-valve J of thepump-engine K. This engine drives the pump L. It will be obvious that itis merely a matter of mechanical skill to so connect the parts that,incase the velocity of the fluid in motion in the pipe A increases thesteam-admission valve will be so affected as to admit less steam, thusreducing the speed of the pump, and therefore supplying a constantamount of fiuid to the boiler or other apparatus with which the pipe Ais connected. Of course in case the velocity of the fluid should fallbelow its proper rate the steam-admission valve will be opened morefully and the speed of the pump, as well as that of the Huid, will beincreased correspondingly.

In the form of my invention so far described the regulation of the fluidvelocity is effected in an indirect manner by regulating the speed ofthe pump-motor. In Fig. 3 I have illustrated another form of myinvention, which is applicable particularly to cases in which the iiowof the liquid is due to a pressure thereof and not necessarily to theaction of a pump; but this second form of my invention is alsoapplicable to constructions in which a pump is employed. In said Fig. 3,a designates the pipe through which the Huid is conveyed, and c is theshaft, carryingthe resistance device or resistance-plate f and alsocarrying an arm g, provided with an adjustable weight 7L. On

the shaft c is further provided a crank-arm c', connected by a link c'with an elbow-leverl c, fulcrumed at 2 upon a stationary support.Thiselbow-lever is further connected, as by a link 3, with a wheel orcrank portion j of a valve j. This valve is in the present case locateddirectly in the pipe a. The operation will be similar to that describedwith reference to the Figs. l, 2, and 4-that is, the position of theplate f will vary according to the greater or smaller velocity of thefluid passing through the pipe a, and any change in the position of theplate f will eect a corresponding change in the position of the valvej', so that in case the velocity rises above the normal rate the valvewill be closed sufliciently to bring the amount of fluid supplied duringone unit of time down to the same constant figure.

It will be seen that my invention provides simple and readily-regulatedmeans for governing the velocity of any iiuid conveyed through a pipe insuch a manner as to keep the amount or volume of iiuid conveyed during apredetermined time practically constant, the only variation being due tothe unavoidable loss of time which will elapse before a change ofposition of the resistance device will aifect the valve or correspondingregulating device.

I claim as my invention and desire to secure by Letters Patent- 1. Thecombination with a conduit through which a iuid is adapted to pass, apropelling device for imparting motion to said iiuid, a motor for saidpropelling device, a regulating device for controlling said motor, amovable resistance device located in the path of the Huid, and anoperative connection from the said resistance device to the regulatingvdevice, so that the action of the motorwill be governed according tothe speed of the propelled fluid..

Q. rIhe combination with a conduit through which a Huid is adapted topass, of a pivoted resistance device arranged in the path of the iiuid,to be moved by the fluid to different positions according to thevelocity of 'the fluid, and means, controlled by the movement of saidresistance device, for governing the velocity of the Huid in saidconduit.

3. The combination with a conduit through which a fluid is adapted topass, of a pump for propelling said fluid through the conduit, a motorfor driving said pump, a regulating device controlling the supply of theactive agent to said motor, a movable resistance device arranged in thepath of the fluid, and an operative connection from said resistancedevice to the regulating device.

4:. The combination with a pipe or conduit through which a iiuid isadapted to pass, of a casing arranged laterally of said conduit andcommunicating therewith, a resistance device pivoted inside of thecasing and extending into the path of the fluid, and means, controlledby the movement of said resistance device, for governing the velocity ofthe fluid in the conduit.

5. The combination with a conduit through which a fiuid is adapted topass, of a pivoted resistance device extending into the path of theiiuid, a weight connected'with said resistance device and adjustabletoward and from the pivot thereof, so as to have a tendency to throw theresistance device with greater or less force in a direction opposite tothe iiow of the iiuid, and means, controlled by the movement of saidresistance device, for governing the velocity of the fluid in theconduit.

JOHN B. FRANCIS HERRESHOFF.

Witnesses:

JOHN LoTKA, EDWIN WIGGLEswoRT'H.

IIO

